A.is the SWL of the crane
B.are the SWL of the crane
C.the SWL of the crane is
D.the SWL of the crane are
您可能感興趣的試卷
你可能感興趣的試題
A.executed
B.located
C.fixed
D.measured
A.Electro-hydraulic units
B.Steam units
C.Independent internal combustion power units
D.All of the above
A.when the line pull reaches the rated winch capacity
B.after the line pull exceeds the rated winch capacity
C.after a short build-up of torque
D.immediately
A.Use one hand to give any motion signal，and place the other hand motionless in front of the hand giving the motion signa
B.Extend arm with the thumb pointing up，and flex the fingers in and out for as long as the load movement is desired
C.First tap your elbow with one hand and then proceed to use regular signals
D.First tap the top of your head with your fist and then proceed to use regular signals
A.Extend arm and point finger in the direction to move the boom
B.Extend arm with thumb pointing downward and flex fingers in and out
C.With forearm vertical and forefinger pointing up，move hand in small horizontal circles
D.With arm extended downwards and forefinger pointing down，move hand in small horizontal circles
最新試題
Which statement comparing a shipboard crane to conventional gear is TRUE（）.
Regulations concerning the stowage，lashing，and securing of timber deck cargoes aboard general cargo vessels may be found in the（）.
Which of the following statement（s）is/are FALSE regarding a twin pedestal crane set （）.
Where is the most probable location of the remote shutdown station for cargo pumps on a tank barge carrying oil（）.
What is meant by the term“l(fā)uffing the boom”of a crane（）．
Which method should be used to warm up the pump turbines prior to discharge（）.
Which part provides for transverse control and positioning of a boom in a conventional yard and stay system（）.
Pedestal cranes have limit switches to restrict movement of which function（s）（）.
Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited（）.
How should you signal the crane operator to move slowly（）.